From 8ae126660fddbeebb9251a174e6fa45b6ad8f932 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Mon, 27 Apr 2015 23:48:34 -0700 Subject: block: kill merge_bvec_fn() completely As generic_make_request() is now able to handle arbitrarily sized bios, it's no longer necessary for each individual block driver to define its own ->merge_bvec_fn() callback. Remove every invocation completely. Cc: Jens Axboe Cc: Lars Ellenberg Cc: drbd-user@lists.linbit.com Cc: Jiri Kosina Cc: Yehuda Sadeh Cc: Sage Weil Cc: Alex Elder Cc: ceph-devel@vger.kernel.org Cc: Alasdair Kergon Cc: Mike Snitzer Cc: dm-devel@redhat.com Cc: Neil Brown Cc: linux-raid@vger.kernel.org Cc: Christoph Hellwig Cc: "Martin K. Petersen" Acked-by: NeilBrown (for the 'md' bits) Acked-by: Mike Snitzer Signed-off-by: Kent Overstreet [dpark: also remove ->merge_bvec_fn() in dm-thin as well as dm-era-target, and resolve merge conflicts] Signed-off-by: Dongsu Park Signed-off-by: Ming Lin Signed-off-by: Jens Axboe --- drivers/md/dm-log-writes.c | 16 ---------------- 1 file changed, 16 deletions(-) (limited to 'drivers/md/dm-log-writes.c') diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c index e9d17488d5e3..316cc3fb741f 100644 --- a/drivers/md/dm-log-writes.c +++ b/drivers/md/dm-log-writes.c @@ -725,21 +725,6 @@ static int log_writes_ioctl(struct dm_target *ti, unsigned int cmd, return r ? : __blkdev_driver_ioctl(dev->bdev, dev->mode, cmd, arg); } -static int log_writes_merge(struct dm_target *ti, struct bvec_merge_data *bvm, - struct bio_vec *biovec, int max_size) -{ - struct log_writes_c *lc = ti->private; - struct request_queue *q = bdev_get_queue(lc->dev->bdev); - - if (!q->merge_bvec_fn) - return max_size; - - bvm->bi_bdev = lc->dev->bdev; - bvm->bi_sector = dm_target_offset(ti, bvm->bi_sector); - - return min(max_size, q->merge_bvec_fn(q, bvm, biovec)); -} - static int log_writes_iterate_devices(struct dm_target *ti, iterate_devices_callout_fn fn, void *data) @@ -793,7 +778,6 @@ static struct target_type log_writes_target = { .end_io = normal_end_io, .status = log_writes_status, .ioctl = log_writes_ioctl, - .merge = log_writes_merge, .message = log_writes_message, .iterate_devices = log_writes_iterate_devices, .io_hints = log_writes_io_hints, -- cgit